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| Distribution | Scientific Name | Synonym | Record | Image | Editor(s) |
|---|---|---|---|---|---|
 | Abies sibirica Pinaceae | 5 records |  | ||
 | Achnatherum saposhnikovii Poaceae | ||||
 | Achnatherum splendens Poaceae | Lasiagrostis splendens (Trin) Kunth acc. to: Grubov 1955, Grubov 1982/2001 Stipa splendens Trinius acc. to: Flora of China (Vol. 22, 2000) | 17 records |   | |
 | Aconitum septentrionale Ranunculaceae | A. excelsum Reichenb. acc. to: Flora of Siberia (Vol. 6, 1993/2003) | 13 records |   | |
 | Aconogonon sericeum Polygonaceae | Polygonum sericeum Pall. ex Georgi acc. to: Grubov 1982 | 6 records | | |
 | Adenophora stenanthina Campanulaceae | 35 records | | ||
 | Adonis sibirica Ranunculaceae | 4 records | | ||
 | Agriophyllum squarrosum Chenopodiaceae | A. pungens (Vahl) Link acc. to: Gubanov 1996 A. arenarium M.Bieb. ex C.A.Mey. acc. to: Vascular Plants of Russia and Adjacent Countries as of 26.10.96 (IOPI) | 30 records |  | |
 | Agrostis stolonifera Poaceae | 4 records | |||
 | Allium schischkinii Alliaceae | A. leucocephalum auct. non Turcz. ex Ledeb.: Egorova 1977/2003:32/35 & Grubov 1982/2001: 64/126 p.p. acc. to: Friesen 1995 | 2 records | | |
 | Allium schoenoprasum Alliaceae | 18 records | | ||
 | Allium senescens Alliaceae | 13 records | | ||
 | Allium senescens ssp. glaucum Alliaceae | A. glaucum (Schrad.) Friesen acc. to: Friesen 1987/2001, Gubanov 1996 | 16 records | | |
| Allium senescens ssp. senescens Alliaceae | 3 records | | ||
 | Allium spirale Alliaceae | A. glaucum Schrader ex Poiret acc. to: Xu Jiemei & Kamelin 2000 | |||
| Allium splendens Alliaceae | 15 records | | ||
 | Allium spurium Alliaceae | A. senescens auct. non L.: Grubov 1982/2000: 66/130, p.p. acc. to: Friesen 1995 A. dauricum N. Friesen acc. to: Gubanov 1996 | 2 records | | |
 | Allium stellerianum Alliaceae | ||||
 | Allium strictum Alliaceae | A. lineare auct. non L.: Egorova 1977/2003: 33/36 & Grubov 1982/2001: 65/128 acc. to: Friesen 1995 | 20 records | | |
 | Allium subtilissimum Alliaceae | 1 record | | ||
 | Alsine segetalis Caryophyllaceae | Spergularia segetalis (L.) G. Don f. acc. to: (Gubanov 1996; Plants of Central Asia, Vol. 11, 2007). | |||
| Anabasis salsa Chenopodiaceae | 5 records | | ||
 | Androsace septentrionalis Primulaceae | 26 records | | ||
| Anemone sibirica Ranunculaceae | Anemonastrum sibiricum (L.)Holub acc. to: Flora of Siberia (Vol. 6, 1993/2003) | 2 records | | |
 | Anemone sylvestris Ranunculaceae | 7 records | | ||
 | Angelica sylvestris Apiaceae | 2 records | | ||
 | Anthriscus sylvestris Apiaceae | ||||
 | Aquilegia sibirica Ranunculaceae | 16 records | | ||
 | Arabis sagittata Brassicaceae | A. hirsuta auct. Fl. Mong., non Scop. acc. to: Gubanov 1996 | 4 records | ||
 | Arenaria serpyllifolia Caryophyllaceae | ||||
 | Armeniaca sibirica Rosaceae | 6 records | | ||
 | Armeria sibirica Plumbaginaceae | Armeria maritima (miller)Willd. acc. to: Flora of Siberia Vol. 11: 57 | 2 records | ||
 | Artemisia santolinifolia ssp. stepposa Asteraceae | | |||
 | Artemisia santolinifolia Asteraceae | 33 records | | ||
 | Artemisia schischkinii Asteraceae | 7 records | | ||
 | Artemisia schrenkiana Asteraceae | 13 records | | ||
 | Artemisia scoparia Asteraceae | 64 records | | ||
 | Artemisia selengensis Asteraceae | 1 record | | ||
 | Artemisia sericea Asteraceae | 17 records | | ||
 | Artemisia sieversiana Asteraceae | 35 records | | ||
 | Artemisia sphaerocephala Asteraceae | 17 records | | ||
 | Artemisia stolonifera Asteraceae | ||||
 | Artemisia subchrysolepis Asteraceae | ||||
 | Artemisia subdigitata Asteraceae | ||||
 | Artemisia sublessingiana Asteraceae | 7 records | | ||
 | Artemisia subulata Asteraceae | ||||
 | Artemisia superba Asteraceae | 1 record | |||
 | Artemisia sylvatica Asteraceae | ||||
| Asparagus schoberioides Asparagaceae | ||||
 | Asperula saxicola Rubiaceae | ||||
 | Asplenium septentrionale Aspleniaceae | 1 record | |||
| Aster sancziri Asteraceae | ||||
 | Astragalus sabuletorum Fabaceae | 1 record | |||
 | Astragalus saichanensis Fabaceae | ||||
| Astragalus sanczirii Fabaceae | ||||
 | Astragalus saralensis Fabaceae | ||||
 | Astragalus scaberrimus Fabaceae | 12 records | | ||
 | Astragalus scabrisetus Fabaceae | 1 record | |||
| Astragalus schanginianus Fabaceae | A. schanginianus subsp. neoschanginianus GoÂloskokov. acc. to: FOC | |||
| Astragalus schrenkianus Fabaceae | A. turlanicus Bajtenov & Myrzakulov acc. to: Catalogue of Life | |||
 | Astragalus secundus Fabaceae | A. frigidus (L.) A. Gray subsp. secundus (DC.) Worosch. acc. to: IPNI A. frigidus subsp. parviflorus Hultén acc. to: Catalogue of Life | |||
| Astragalus sphaerocystis Fabaceae | ||||
 | Astragalus stenoceras Fabaceae | ||||
 | Astragalus sulcatus Fabaceae | 1 record | |||
 | Astragalus syriacus Fabaceae | A. fruticosus Pall. non Forssk. acc. to: Grubov 1982 A. suffruticosus DC. acc. to: Gubanov (1996) | 12 records | | |
| Athyrium sinense Athyriaceae | ||||
 | Atragene sibirica Ranunculaceae | A. speciosa Weinm. acc. to: Gubanov 1996 Clematis sibirica Miller acc. to: Flora of China (Vol. 6, 2003) | 23 records | | |
| Atraphaxis spinosa Polygonaceae | 5 records | | ||
| Atriplex sibirica Chenopodiaceae | 34 records | | ||
| Barbarea stricta Brassicaceae | Campe stricta (Andrz.) W. Wight ex Piper acc. to: Catalogue of Life Crucifera stricta Krause acc. to: IPNI | 1 record | ||
| Beckmannia syzigachne Poaceae | 14 records | | ||
 | Berberis sibirica Berberidaceae | 20 records | | ||
 | Blysmus sinocompressus Cyperaceae | 18 records | | ||
| Brachypodium sylvaticum Poaceae | Festuca sylvatica Hudson acc. to: Flora of China online | 2 records | | ||
 | Braya siliquosa Brassicaceae | B. versicolor Turcz. acc. to: Catalogue of Life | |||
 | Bromopsis sibirica Poaceae | Bromus pumpellianus Scribn. acc. to: Grubov 1982 | 31 records | | |
| Bromus scoparius Poaceae | 2 records | | ||
| Bromus squarrosus Poaceae | 1 record | |||
 | Bunium setaceum Apiaceae | Scaligeria setacea (Schrenk) Korov. acc. to: Grubov 1982 | |||
| Bupleurum scorzonerifolium Apiaceae | 13 records | | ||
 | Bupleurum sibiricum Apiaceae | 5 records | | ||
 | Calamagrostis sajanensis Poaceae | ||||
 | Calamagrostis salina Poaceae | ||||
 | Callianthemum sajanense Ranunculaceae | C. angustifolium Witasek acc. to: Grubov 1982 | 5 records | | |
| Calystegia sepium Convolvulaceae | ||||
| Calystegia subvolubilis Convolvulaceae | ||||
 | Camelina sativa Brassicaceae | ||||
 | Camptosorus sibiricus Aspleniaceae | 2 records | | ||
 | Cannabis sativa Cannabaceae | C. ruderalis Janisch. acc. to: Gubanov 1996 | 3 records | | |
 | Caragana spinosa Fabaceae | 14 records | | ||
 | Caragana stenophylla Fabaceae | 5 records | | ||
 | Carex sabulosa Cyperaceae | ||||
 | Carex sabynensis Cyperaceae | 1 record | | ||
 | Carex sajanensis Cyperaceae | 2 records | | ||
 | Carex saxatilis ssp. laxa Cyperaceae | 3 records | |||
| Carex schmidtii Cyperaceae | 5 records | | ||
 | Carex secalina Cyperaceae | C. eremopyroides V. Krecz. acc. to: Grubov 1982 | 4 records | ||
| Carex sedakowii Cyperaceae | 7 records | | ||
 | Carex sempervirens Cyperaceae | C. stenocarpa Turcz. ex V. Krecz. acc. to: Grubov 1982, Gubanov 1996 | 12 records | | |
 | Carex songorica Cyperaceae | 6 records | | ||
 | Carex songorica ssp. gotoi Cyperaceae | | |||
 | Carex sordida Cyperaceae | C. drymophila Turcz. ex. Steudel acc. to: (Flora of Siberia, Vol. 3, 2001). | |||
 | Carex stenophylloides Cyperaceae | C. stenophylla ssp. stenophylloides (V. Krecz.) Egor. acc. to: Flora of Siberia, Vol. 3, 2001 | 23 records | | |
 | Carex supermascula Cyperaceae | 1 record | | ||
| Chamaerhodos sabulosa Rosaceae | 28 records | | |||
 | Chenopodium strictum Chenopodiaceae | 31 records | | ||
 | Chorispora sibirica Brassicaceae | 5 records | | ||
 | Chrysosplenium sedakowii Saxifragaceae | 8 records | | ||
| Cicer songaricum Fabaceae | ||||
| Cimicifuga simplex Ranunculaceae | ||||
 | Cirsium serratuloides Asteraceae | 7 records | | ||
 | Cirsium setosum Asteraceae | C. arvense (L.) Scop. acc. to: Grubov 1982 | 6 records | | |
 | Cistanche salsa Orobanchaceae | Phelipaea salsa C. A. Mey acc. to: Beck, Pflanzenr. IV (261) 96: 36 Orobanche salsa Kuntze in Act. Hort acc. to: Beck, Pflanzenr. IV (261) 96: 36 | 4 records | ||
 | Cleistogenes songorica Poaceae | 31 records | | ||
 | Cleistogenes squarrosa Poaceae | 33 records | | ||
 | Clematis songorica Ranunculaceae | 3 records | | ||
| Climacoptera subcrassa Chenopodiaceae | Salsola subcrassa Popov ex Iljin in Shishkin acc. to: Flora of China (Vol. 5, 2003) | 1 record | | |
 | Corydalis sibirica Fumariaceae | 16 records | | ||
| Corydalis sibirica ssp. impatiens Fumariaceae | 9 records | | ||
| Corydalis stricta Fumariaceae | 2 records | | ||
| Corydalis stricta ssp. holosepala Fumariaceae | | |||
| Corydalis stricta ssp. spathosepala Fumariaceae | | |||
| Crataegus sanguinea Rosaceae | 3 records | | ||
| Crepidiastrum sonchifolium Asteraceae | Paraixeris sonchifolia (Maxim.) Tzvelev acc. to: N. Kilian, 11/2013 | ||||
 | Crepis sibirica Asteraceae | 9 records | | ||
 | Crypsis schoenoides Poaceae | Phleum schoenoides L. acc. to: Flora of China Heleochloa schoenoides (L.) Host. acc. to: Flora of China | 2 records | ||
| Cryptogramma stelleri Cryptogrammaceae | 1 record | | ||
 | Cynanchum sibiricum Asclepiadaceae | 2 records | | ||
 | Cynomorium songaricum Cynomoriaceae | 6 records | | ||
 | Cystopteris sudetica Athyriaceae | ||||
 | Dactylorhiza salina Orchidaceae | Orchis salina Turcz. ex Lindl. acc. to: Grubov 1982 | 18 records | | |
| Delphinium sajanense Ranunculaceae | ||||
| Dendranthema sinuatum Asteraceae | Chrysanthemum sinuatum Ldb. acc. to: Grubov 1982 | 2 records | | |
 | Deschampsia sukatschewii Poaceae | ||||
 | Descurainia sophia Brassicaceae | 10 records | | ||
| Dianthus soongoricus Caryophyllaceae | ||||
 | Dianthus superbus Caryophyllaceae | 15 records | | ||
| Diplazium sibiricum Athyriaceae | Athyrium crenatum (Sommerf.) Rupr. acc. to: Grubov 1982 | 5 records | | |
 | Dontostemon senilis Brassicaceae | 60 records | | ||
| Draba sibirica Brassicaceae | ||||
| Draba stenocarpa Brassicaceae | ||||
 | Draba subamplexicaulis Brassicaceae | 3 records | | ||
| Dryas sumneviczii Rosaceae | ||||
| Echinops sp. nov. Asteraceae | E. ritro auct.Fl.Mong., non L. acc. to: Gubanov 1996 | 1 record | ||
 | Elymus schrenkianus Poaceae | 2 records | |||
| Elymus schrenkianus ssp. pamiricus Poaceae | ||||
 | Elymus sibiricus Poaceae | 24 records | | ||
| Empetrum sibiricum Empetraceae | 8 records | | ||
 | Equisetum scirpoides Equisetaceae | 6 records | | ||
| Equisetum sylvaticum Equisetaceae | 2 records | | ||
 | Eriophorum scheuchzeri ssp. altaicum Cyperaceae | 3 records | | ||
 | Erodium stephanianum Geraniaceae | 31 records | | ||
 | Eruca sativa Brassicaceae | 1 record | |||
 | Erysimum sisymbrioides Brassicaceae | ||||
 | Euphorbia subcordata Euphorbiaceae | ||||
 | Euphrasia syreitschikovii Scrophulariaceae | 2 records | |||
 | Festuca sibirica Poaceae | 19 records | | ||
| Filifolium sibiricum Asteraceae | Artemisia sibirica (Linnaeus) Maximowicz acc. to: FOC Chrysanthemum trinioides Handel-Mazzetti acc. to: FOC | 12 records | ||
| Fumaria schleicheri Fumariaceae | ||||
| Galium saurense Rubiaceae | ||||
| Galium songaricum Rubiaceae | 4 records | |||
| Galium spurium var. vaillantii Rubiaceae | Galium vaillantii DC. acc. to: Gubanov 1996 | 15 records | ||
| Gentiana squarrosa Gentianaceae | 16 records | | ||
 | Geranium sibiricum Geraniaceae | 20 records | | ||
| Glaucium squamigerum Papaveraceae | 3 records | | ||
| Glyceria spiculosa Poaceae | Scolochloa spiculosa F. Schmidt acc. to: Flora of China, Vol.22, 2006 | 1 record | | |
 | Glycyrrhiza squamulosa Fabaceae | Astragalus glanduliferus Debeaux. acc. to: FOC | |||
 | Goniolimon speciosum Plumbaginaceae | 38 records | | ||
| Gueldenstaedtia stenophylla Fabaceae | G. verna (Georgi) Boriss. acc. to: (Plants of Central Asia, Vol. 8a, 2003: p. 59). | |||
| Gypsophila sericea Caryophyllaceae | ||||
| Halerpestes salsuginosa Ranunculaceae | H. ruthenica (Jacq.)Ovcz. acc. to: Plants of Central Asia (Vol. 12, 2001/2007) Ranunculus ruthenicus Jacq. acc. to: Plants of Central Asia (Vol. 12, 2001/2007) | 35 records | | |
| Halerpestes sarmentosa Ranunculaceae | 16 records | | ||
| Halocnemum strobilaceum Chenopodiaceae | 2 records | | ||
| Hedysarum sajanicum Fabaceae | ||||
| Hedysarum sangilense Fabaceae | ||||
 | Hedysarum setigerum Fabaceae | 5 records | | ||
| Helictotrichon schellianum Poaceae | H. hookeri subsp. schellianum (Hackel) Tzvelev acc. to: Flora of China Vol.22, 2006 | 25 records | | |
 | Heracleum sibiricum Apiaceae | ||||
 | Hesperis sibirica Brassicaceae | 3 records | | ||
| Huperzia selago Huperziaceae | Lycopodium selago L. acc. to: Grubov 1982 | 1 record | ||
| Inula salicina Asteraceae | Aster salicinus (Linnaeus) Scopoli acc. to: FOC | |||
 | Iris sanguinea Iridaceae | ||||
 | Juncus salsuginosus Juncaceae | 15 records | | ||
| Juncus soranthus Juncaceae | ||||
 | Juniperus sabina Cupressaceae | 21 records | | ||
| Juniperus sibirica Cupressaceae | 8 records | | ||
 | Kadenia salina Apiaceae | Cnidium salinum Turcz. acc. to: Grubov 1982 | 5 records | ||
| Knorringia sibirica ssp. ubsunurica Polygonaceae | Polygonum sibiricum Laxm. acc. to: Grubov 1982 | | ||
| Knorringia sibirica Polygonaceae | Polygonum sibiricum Laxm. acc. to: Grubov 1982 | 25 records | | |
| Kobresia sibirica Cyperaceae | 3 records | | ||
 | Kobresia simpliciuscula Cyperaceae | 13 records | | ||
| Kobresia simpliciuscula ssp. subholarctica Cyperaceae | | |||
 | Kobresia smirnovii Cyperaceae | 10 records | | ||
 | Kochia scoparia Chenopodiaceae | K. scoparia var. angustifolia Turcz. acc. to: Czerepanov 1995 | 5 records | | |
 | Lactuca serriola Asteraceae | L. altaica Fischer & C. A. Meyer acc. to: FOC L. scariola Linnaeus acc. to: FOC | 5 records | ||
 | Lactuca sibirica Asteraceae | 17 records | | ||
 | Lagopsis supina Lamiaceae | 7 records | | ||
 | Lappula semiglabra Boraginaceae | 12 records | | ||
 | Lappula stricta Boraginaceae | 4 records | | ||
 | Larix sibirica Pinaceae | 14 records | | ||
 | Leonurus sibiricus Lamiaceae | 5 records | |||
| Lepidium songaricum Brassicaceae | |||||
| Lepidium soongoricum Brassicaceae | ||||
 | Leymus secalinus Poaceae | Elymus secalinus (Georgi) Bobr. acc. to: Grubov 1982 | 62 records | | |
| Ligularia sagitta Asteraceae | 2 records | | ||
 | Ligularia sibirica Asteraceae | 12 records | | ||
| Ligularia songarica Asteraceae | ||||
 | Limbarda salsoloides Asteraceae | Inula salsoloides (Turcz.) Ostenf. acc. to: Grubov 1982 | 4 records | | |
| Limonium suffruticosum Plumbaginaceae | ||||
| Lindelofia stylosa Boraginaceae | 1 record | | ||
| Listera savatieri Orchidaceae | ||||
| Lloydia serotina Liliaceae | 16 records | | ||
| Luzula sibirica Juncaceae | 17 records | |||
| Luzula spicata ssp. mongolica Juncaceae | 8 records | |||
| Lychnis sibirica Caryophyllaceae | 14 records | | ||
| Malva sylvestris Malvaceae | M. mauritiana L. acc. to: Grubov 1982 | 1 record | | |
| Matteuccia struthiopteris Woodsiaceae | ||||
 | Medicago sativa Fabaceae | ||||
 | Melilotus suaveolens Fabaceae | 4 records | | ||
| Merremia sibirica Convolvulaceae | Ipomoea sibirica (L.) Pers. acc. to: Gubanov 1996 Convolvulus sibiricus L. acc. to: Gubanov 1996 | 3 records | ||
| Mertensia stylosa Boraginaceae | 3 records | | ||
| Minuartia stricta Caryophyllaceae | ||||
 | Myosotis scorpioides Boraginaceae | 1 record | |||
| Myosotis suaveolens Boraginaceae | 26 records | | ||
| Myriophyllum spicatum Haloragaceae | 12 records | | ||
| Nardus stricta Poaceae | ||||
 | Nepeta sibirica Lamiaceae | 26 records | | ||
 | Nitraria sibirica Nitrariaceae | 38 records | | ||
| Nitraria sphaerocarpa Nitrariaceae | 1 record | |||
 | Omalotheca supina Asteraceae | Gnaphalium supinum L. acc. to: Grubov 1982 | |||
 | Onobrychis sibirica Fabaceae | 4 records | | ||
 | Onosma setosa ssp. transrhymnense Boraginaceae | O. transrhymnense Klok. acc. to: Grubov 1982 | 2 records | | |
 | Orostachys spinosa Crassulaceae | 36 records | | ||
 | Orthilia secunda Pyrolaceae | Pyrola secunda L. acc. to: Grubov 1982 | 2 records | | |
 | Oxytropis sacciformis Fabaceae | ||||
| Oxytropis sajanensis Fabaceae | ||||
 | Oxytropis salina Fabaceae | O. glabra DC. acc. to: Catalogue of Life | 25 records | | |
| Oxytropis saposhnikovii Fabaceae | ||||
| Oxytropis selengensis Fabaceae | 2 records | |||
 | Oxytropis setosa Fabaceae | ||||
| Oxytropis songorica Fabaceae | ||||
| Oxytropis sordida Fabaceae | O. campestris subsp. sordida (Willd.)C.Hartm. acc. to: Catalogue of Life | 1 record | ||
 | Oxytropis squamulosa Fabaceae | ||||
 | Oxytropis stenophylla Fabaceae | ||||
| Oxytropis strobilacea Fabaceae | 19 records | | ||
 | Oxytropis stukovii Fabaceae | ||||
| Oxytropis sutaica Fabaceae | ||||
| Papaver saichanense Papaveraceae | 3 records | | ||
| Paraixeris serotina Asteraceae | Crepidiastrum sonchifolium subsp. sonchifolium (Maxim.) Pak & Kawano acc. to: FOC | |||
| Patrinia scabiosifolia Valerianaceae | ||||
 | Patrinia sibirica Valerianaceae | 19 records | | ||
 | Pedicularis sceptrum-carolinum Orobanchaceae | Scrophulariaceae P. sceptrum-carolinum L. acc. to: Gubanov 1996 P. pubescens Pai acc. to: Grubov et al. 2002 | 1 record | ||
| Pedicularis sibirica Orobanchaceae | Scrophulariaceae P. sibirica Vved. acc. to: Gubanov 1996 P. comosa auct. Flora Sibirica acc. to: Shishkin et al. 1955 | |||
 | Pedicularis spicata Orobanchaceae | Scrophulariaceae P. spicata Pall. acc. to: Gubanov 1996 | |||
 | Pedicularis striata Orobanchaceae | Scrophulariaceae P. striata Pall. acc. to: Gubanov 1996 | 15 records | | |
| Pedicularis sudetica Orobanchaceae | Scrophulariaceae P. sudetica Willd. acc. to: | |||
| Persicaria scabra Polygonaceae | ||||
 | Persicaria sungareensis Polygonaceae | Polygonum intricatum Kom. acc. to: Grubov 1982 | 3 records | | |
 | Phlojodicarpus sibiricus Apiaceae | P. popovii Sipl. acc. to: Gubanov 1996 | 12 records | | |
 | Phlox sibirica Polemoniaceae | ||||
| Pinus sibirica Pinaceae | 12 records | | ||
| Pinus sylvestris Pinaceae | 3 records | | ||
| Piptatherum songaricum Poaceae | ||||
 | Plantago salsa Plantaginaceae | P. maritima ssp. salsa (Pall.) Soják acc. to: Flora of Siberia, Vol 12 (2007) | 23 records | | |
 | Poa schischkinii Poaceae | 1 record | |||
 | Poa sibirica Poaceae | 21 records | | ||
| Poa skvortzovii Poaceae | ||||
 | Poa smirnovii Poaceae | ||||
| Poa stepposa Poaceae | 15 records | | ||
 | Poa subfastigiata Poaceae | 11 records | |||
 | Poa supina Poaceae | 3 records | |||
| Polygala sibirica Polygalaceae | 5 records | | ||
 | Polygonatum sibiricum Convallariaceae | 3 records | |||
| Polypodium sibiricum Polypodiaceae | Polypodium virginianum auct. Fl. Mong., non L. acc. to: Grubov 1982 | 3 records | | |
 | Populus simonii Salicaceae | ||||
| Populus suaveolens Salicaceae | 8 records | | ||
 | Potentilla salesoviana Rosaceae | Comarum salesovianum (Steph.) Aschers. et Graebn. acc. to: Gubanov 1996 | 10 records | | |
 | Potentilla sanguisorba Rosaceae | ||||
| Potentilla semiglabra Rosaceae | P. orientalis auct. non Juz. acc. to: Flora of Siberia, Vol. 8 (2004) | 3 records | ||
 | Potentilla sericea Rosaceae | P. dasyphylla Bunge acc. to: Gubanov 1996 | 74 records | | |
| Potentilla serrata Rosaceae | ||||
| Potentilla sischanensis Rosaceae | ||||
| Potentilla soongorica Rosaceae | 3 records | | ||
 | Potentilla supina Rosaceae | 12 records | | ||
 | Primula serrata Primulaceae | ||||
 | Puccinellia schischkinii Poaceae | 1 record | |||
 | Ranunculus sceleratus Ranunculaceae | 4 records | | ||
| Ranunculus sulphureus Ranunculaceae | 2 records | |||
 | Reaumuria soongarica Tamaricaceae | R. soongorica (Pall.) Maxim. acc. to: Grubov 1982 | 36 records | | |
| Rhinanthus songaricus Scrophulariaceae | R. glaber Lamarck acc. to: FOC Orobanchaceae acc. to: Heywood 2007 | 5 records | | |
 | Ribes spicatum Grossulariaceae | 2 records | | ||
 | Rubus sachalinensis Rosaceae | 8 records | |||
| Rubus saxatilis Rosaceae | 10 records | | ||
 | Rumex similans Polygonaceae | 7 records | | ||
 | Rumex stenophyllus Polygonaceae | 11 records | | ||
| Sagina saginoides Caryophyllaceae | 2 records | | ||
 | Salix sajanensis Salicaceae | 4 records | | ||
| Salix saposhnikovii Salicaceae | 5 records | | ||
| Salix saxatilis Salicaceae | 1 record | |||
| Salix schwerinii Salicaceae | 5 records | | ||
| Sambucus sibirica Caprifoliaceae | 6 records | | ||
 | Saussurea saichanensis Asteraceae | 17 records | | ||
| Saussurea salicifolia Asteraceae | 28 records | | ||
 | Saussurea salsa Asteraceae | 13 records | | ||
| Saussurea schanginiana Asteraceae | 19 records | | ||
| Saussurea stubendorffii Asteraceae | 1 record | | ||
| Saussurea subacaulis Asteraceae | 10 records | | ||
| Saussurea sukaczevii Asteraceae | ||||
| Saxifraga setigera Saxifragaceae | 17 records | | ||
 | Saxifraga sibirica Saxifragaceae | 25 records | | ||
| Saxifraga spinulosa Saxifragaceae | 20 records | | ||
| Scirpus supinus Cyperaceae | 1 record | |||
| Scorzonera sinensis Asteraceae | |||||
| Scorzonera subacaulis Asteraceae | |||||
| Scutellaria scordiifolia Lamiaceae | 28 records | | ||
| Scutellaria supina Lamiaceae | ||||
| Securinega suffruticosa Euphorbiaceae | Flueggea suffruticosa (Pallas) Baillon acc. to: Flora of China online | |||
| Selaginella sanguinolenta Selaginellaceae | 12 records | | ||
 | Senecio subdentatus Asteraceae | 4 records | |||
 | Senecio sukaczevii Asteraceae | Tephroseris sukaczevii Holub acc. to: Catalogue of Life | |||
| Senecio sumneviczii Asteraceae | Cineraria sumneviczii (Schischk. & Serg.) Kamelin acc. to: IPNI | 5 records | | |
 | Seseli seseloides Apiaceae | Libanotis seseloides Turcz. acc. to: Grubov 1982 | 2 records | | |
 | Sibbaldianthe sericea Rosaceae | Sibbaldia sericea ( Grubov) Sojak acc. to: Flora of China online | 1 record | ||
| Sisymbrium subspinescens Brassicaceae | ||||
 | Sium suave Apiaceae | 9 records | | ||
 | Solanum septemlobum Solanaceae | ||||
 | Sonchella stenoma Asteraceae | Youngia stenoma (Turcz. ex DC.) Ledeb. acc. to: N. Kilian 11/2013 Crepis stenoma Turcz. ex DC. acc. to: N. Kilian, 11/2013 | 2 records | ||
| Sorbaria sorbifolia Rosaceae | 1 record | | ||
| Sorbus sibirica Rosaceae | S. aucuparia ssp. sibirica (Hedl.) Krylov. acc. to: Flora of Siberia (2004), Vol.8:19 | 2 records | ||
 | Sparganium stoloniferum Sparganiaceae | ||||
 | Sphaerophysa salsula Fabaceae | 19 records | | ||
| Spiraea salicifolia Rosaceae | 12 records | | ||
 | Spiraea sericea Rosaceae | 4 records | |||
| Spodiopogon sibiricus Poaceae | ||||
| Stenosolenium saxatile Boraginaceae | ||||
| Stevenia sergievskajae Brassicaceae | ||||
 | Stipa sareptana Poaceae | 4 records | | ||
 | Stipa sibirica Poaceae | Achnatherum sibiricum (Linnaeus) Keng ex Tzvelev acc. to: Flora of China (Vol. 22, 2000) | 42 records | | |
 | Suaeda sibirica Chenopodiaceae | S. corniculata auct. acc. to: Lomonosova et al. 2008 S. kossinskyi auct. acc. to: Lomonosova et al. 2008 | 16 records | | |
| Taraxacum selengensis Asteraceae | ||||
 | Taraxacum sinicum Asteraceae | T. armeriifolium Soest acc. to: Grubov 1982 | 2 records | ||
 | Taraxacum songoricum Asteraceae | ||||
| Taraxacum stanjukoviczii Asteraceae | ||||
| Taraxacum stenolobum Asteraceae | ||||
| Taraxacum submacilentum Asteraceae | ||||
 | Taraxacum sumneviczii Asteraceae | ||||
| Thalictrum simplex Ranunculaceae | 25 records | | ||
| Thalictrum squarrosum Ranunculaceae | 15 records | | ||
 | Thellungiella salsuginea Brassicaceae | 2 records | |||
 | Thesium saxatile Santalaceae | ||||
| Thymus sibiricus Lamiaceae | ||||
 | Tournefortia sibirica Boraginaceae | 14 records | | ||
| Tragopogon songoricus Asteraceae | 2 records | | ||
 | Trisetum sibiricum Poaceae | 48 records | | ||
| Trisetum spicatum ssp. mongolicum Poaceae | 2 records | | ||
| Trisetum spicatum Poaceae | 7 records | | |||
| Truellum sieboldii Polygonaceae | Polygonum belophyllum Litv. acc. to: Grubov 1982 | 1 record | | |
| Urtica sondenii Urticaceae | ||||
 | Valeriana saichanensis Valerianaceae | 7 records | | ||
| Veronica scutellata Scrophulariaceae | ||||
 | Veronica spuria Scrophulariaceae | Pseudolysimachion spurium (L.) Rauschert acc. to: Rothmaler 2005; Flora of China online | 5 records | | |
| Veronicastrum sibiricum Scrophulariaceae | Veronica sibirica L. acc. to: Grubov 1982 | 2 records | | |
| Viburnum sargentii Caprifoliaceae | ||||
| Vicia sativa Fabaceae | 1 record | |||
| Vicia semenovii Fabaceae | ||||
| Vicia sepium Fabaceae | ||||
| Vincetoxicum sibiricum Asclepiadaceae | Antitoxicum sibiricum (L.) Pobed. acc. to: Czerepanov S.K. (1995) | 31 records | | |
 | Viola sacchalinensis Violaceae | ||||
| Viola selkirkii Violaceae | ||||
| Woodsia subcordata Woodsiaceae | 1 record | |||
 | Xanthium strumarium Asteraceae | 2 records | |||
| Zigadenus sibiricus Melanthiaceae | 5 records | |